![background image](http://html.mh-extra.com/html/gardner-denver/wittig-rfw-150-dv/wittig-rfw-150-dv_operating-and-service-manual_563944013.webp)
BA-
45.01.0 • US •01/15
4-2
4. Installation
Notes
Figure 4-1 shows an example of a completely installed
compressor & vacuum pump of the RFW series.
Other installation variations are also possible.
Installation and start-up operation must only be
carried out by instructed personnel. If faults should
occur that are caused by operating errors, Gardner
Denver are not liable for guarantee claims
The machine is delivered ready-to-be-connected.
There must not be any damages due to transport.
Please make sure, that the rotor shaft can be turned
by hand; if not, contact our after-sales office.
The machine may only transported by means of the
securely fitted eye bolts.
Installation location and attachment
The installation location on the vehicle must:
be easily accessible,
be protected from dirt, gravel impact and water
splashes,
provide enough space for the connection of the
suction and pressure pipes,
provide easy access for maintenance (oil inlet
screw, oil monitoring window).
The machine is mounted by means of the 4 feet
(screw thread M12) at the top or bottom. The machine
can be screwed directly to the chassis or to the
traverse units.
The drive shaft of the rotary compressor/compressor
and vacuum pump must be mounted horizontally
(maximum permitted deviation when the vehicle is
stationary: 5°).
The compressor/compressor and vacuum pump can
be mounted in steps of 90° around the longitudinal
axis. The oil reservoir must then be disconnected and
turned so that the inlet opening is at the top and the
draining tap at the bottom. It must also be ensured that
the oil pump draws in oil at the lowest point of the oil
reservoir. It may be necessary to use a different oil
intake suction pipe. Please contact us - your after-
sales service center will be pleased to help you adapt
the appliance to your installation requirements.
Traverse mountings on the vehicle chassis must be
strong enough; thin profiles and flat metal sheets must
not be used.
The mounting points (supports for the machine feet)
must be exactly balanced. For dimensions and weights
see
chapter 1, Technical data.
Prevention of suction intake of dirt and
residue
4.2.1
Suction pipe
The pipe must be non-corroding on the inside. Before
installation it must be cleaned from the inside; weld
globules, burn residue and rust must be carefully
removed.
The suction pipe must slope upwards to the machine
joint, so that condensate flows away from the machine.
For
compressor/vacuum
pumps
and dedicated
vacuum pumps, a safety tank with a draining tap must
be fitted at the lowest point.
The suction pipe must be of a sufficient size.
Its diameter should be
at least
as given in
the following table.
Otherwise the machine will be overloaded.
If the suction pipe is of an incorrect size, any
guarantee provided by Gardner Denver loses
its validity.
Rotary compressor &
vacuum pump
Required minimum
diameter for suction pipe
RFW 150
DN 100
RFW 200
DN 125
RFW 260
DN 125
4.2.2
Vacuum filter (4.1/2)
The vacuum filter is fitted directly before the machine.
It protects it from contamination and suppresses the
suction noise.
When fitting the filter unit, the flow direction must be
taken into account. For maintenance purposes it must
be possible to remove the filter element.
4.2.3
Safety dome (4.1/11)
The safety dome on the vehicle tank must include not
only a floating valve, but also a swell protection device
to avoid liquid from being drawn off when the liquid
surges up.